St. Olav's Day is celebrated on July 29th each year in honor of King Olav II of Norway, who became a saint after his death in 1030. He is known for uniting Norway and promoting Christianity during his reign. The day is marked by various festivities, including church services and cultural events, particularly in Norway. In addition to its religious significance, St. Olav's Day is also a time for communities to come together and celebrate their heritage. Many towns hold parades, concerts, and traditional feasts, showcasing Norwegian culture and history, making it a vibrant occasion for locals and visitors alike.